html {
    width: 100%;
    height: 100%;
    font-size: 100px;
    body {
        width: 100%;
        height: 100%;
        font-size: 0.12rem;
        display: flex;
        flex-direction: column;
        background: #f5f5f5;
        // header
        header {
            height: 3.67rem;
            background: #1b82d1;
            box-sizing: border-box;
            color: #fff;
            padding: 0.5rem;
        }
        main {
            height: 100%;
            width: 100%;
            flex: 1;
            overflow: auto;
            box-sizing: border-box
        }
        footer {
            height: 1.65rem;
            border-top: 1px solid #ccc;
            box-sizing: border-box;
            ul {
                display: flex;
                justify-content: center;
                li {
                    flex: 1;
                    a {
                        padding: 0.1rem;
                        box-sizing: border-box;
                        display: flex;
                        flex-direction: column;
                        align-items: center;
                        color: #bababa;
                        font-size: 0.9rem;
                        i {
                            font-size: 0.6rem;
                            color: #bababa;
                        }
                        span {
                            font-size: 0.32rem;
                        }
                    }
                }
                .active {
                    a {
                        color: #29a1f7;
                        i {
                            color: #29a1f7;
                        }
                    }
                }
            }
        }
    }
}